I'm trying to export contacts from the list in CiviCRM but got a visual warning which does not let me proceed:

Warning: Undefined array key "merge_same_household" in /bitnami/wordpress/wp-content/uploads/civicrm/templates_c/es_MX/%%00/00A/00AEAD8F%%Select.tpl.php on line 86

Warning: Trying to access array offset on value of type null in /bitnami/wordpress/wp-content/uploads/civicrm/templates_c/es_MX/%%00/00A/00AEAD8F%%Select.tpl.php on line 86

I've navigated to the path and opened the file "00AEAD8F%%Select.tpl.php" on line 86.

  <div class="content crm-content-mergeSameHousehold">
    &nbsp;<?php echo $this->_tpl_vars['form']['merge_same_household']['html']; ?>

I'm not sure what the problem is. I was thinking about replacing the file with a new one downloaded from the repository or even deleting it although I'm not sure.

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  • What happens when you click Continuar? Those are warnings and not errors, so in theory you should be able to continue. Is it possible that the PHP error_reporting level is set on your server? Nothing wrong with that file.
    – Lars SG
    Commented Jun 6, 2023 at 19:51
  • @LarsSG If I click "continue" everything works as normal, however this "warning" was not showing up before and it's kind of intriguing to see this. My server is a Virtual Machine with a Bitnami WordPress stack. Commented Jun 6, 2023 at 21:48
  • It's just PHP saying that it's trying to look up something that is empty and giving a warning because it is empty (which is more like maybe something isn't working as expected rather than a real error). In this case it is that PHP versions have changed over time and what once was OK now generates a warning.
    – Lars SG
    Commented Jun 6, 2023 at 22:00
  • I would check in php.ini and see if perhaps your error_reporting setting has changed. Also check WP_DEBUG_DISPLAY in wp-config and error_reporting in civicrm.settings.php.
    – Lars SG
    Commented Jun 6, 2023 at 22:06

1 Answer 1


This warning will be fixed in future versions. In the meantime, changing the error_reporting level should remove it.

  • 1
    Sorry but I understand this, but how can I error_reporting level in the CiviCRM installation in WordPress if I don't already have the line 'define( 'WP_DEBUG', false );' in the wp-config.php file? Commented Jun 14, 2023 at 21:25

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